@article{AIHPA_1977__26_4_333_0,
     author = {Ronveaux, A. and Dumont-Lepage, M. C.},
     title = {Potentiels sph\'ero{\"\i}daux pour l'\'equation de {Schr{\oe}dinger.} {II.} {Bornes} sur le nombre d'\'etats li\'es},
     journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique},
     pages = {333--342},
     publisher = {Gauthier-Villars},
     volume = {26},
     number = {4},
     year = {1977},
     zbl = {0362.35020},
     language = {fr},
     url = {http://archive.numdam.org/item/AIHPA_1977__26_4_333_0/}
}